Draft-rigging.



F. S. ARTER.

DRAFT RIGGING. APPLICATION-mio vc.2|, 1914.

1,184,708. Patented Muy 3o, 1916.

2 SHEETS-SHEET l. 7ZY

l .www

l NMa.. Y

Patented May 30, 1916.

2 SHEETS-SHEET 2.

F. S. ARTER.

DRAFT RIGGNG.

APPLICATION man 05021. 19m.

FREDERICK SHAW ARTER, 0F CLEVELAND, OHIO.

DRAFnRIGGI'NG.

Specification of Letters Patent.

Application filed December 21, 1914. Serial No. 878,317.

lie it known that I, Fnnnrznicli S. ARTER, a citi/.en of the UnitedStates, resident of ('leveland, county of Cuyahoga, and State ol Uhio.yhave invented a new and useful improvement in Draft-Rigging. ofv'hichthe following is a specification, the principle ol' the invention beingherein explained and the best inode in which Ihave contemplated applyingthat principle, so as to distinguish it from other inventions.

4vMy invention relates to draft-rigging for railway or similar cars, itsobject being to provide a draft-rigging which will Ybe 'econonucal ofconstruction and eliiclent 1n lts operation.

` -pulled outwardly.

The said invention consists of :means hereinafter fully described andparticularly set forth in "the elain'is. l

' The annexed drawings Vand the'following description set forthirrdefail certain means embodying my invention, the disclosed means,`however, constituting but one of various mechanical 'Afin-ms in whichthe princi ple of the invention may lbe applied.

`In said annexed' drawings :*Figure 1 rej'nfcsents a plan of adraft-rigging em` liodying my invention and showing the end portion ofthe longitudinal sills of a carin' connection therewith, the parts ofthe rigging being shown in, their normal posit-ion. Fig. 2 representsaside elevation of the mechanism'` and [iartssl'iown in Fig. 1. Fig.

3 represents a. longitudinal vertical section taken upon the planeindicated by )line llIIlI in 1.

Fig. 4 represents a transverse section taken upon the plafne in-ydicated byline 1V`1V in Fig. 1, part of the.elements,however, cut bytheplane of section lacing shown in elevation. Fig. 5

` represents a view similar to Fig. 1 showing the-parts in` thepositionin whichtheidrawar is-.pushed inwardly. f Fig. (i is a viewsimilar to that of 1 showing the parts in' the position in In theillustrated embodiment of my invention, the main longitudinal centersills 1 Y are utilized to form the main support for the draft-rigging,as is customary.

Each of the end portions of the opposing vertical faces of the sills isprovided .with a draft plate 2, as is also customary. This draft plateis provided with two sets of opposing abutments 3, 3, and 4,V 4, asclearly shown in Fig. 1 and seated between each of .Upon this centralwhich the draw-bar is t-on and piston rod. Aably provided with a thesepairs of ahutments is a follower plate o. Secured to the under side ofthe sills and extending laterally from the outer faces of same is aframe (i, the centrall'iortion 6' of which has its upper face flush withthe bottom faces of the sills, as shown in Fig. 3. portion rests thestrap 7 ofv the draw-bar. In the rear end of this strap is secured afollower block 8 and t0 the'front end of said strap is secured the rearend of the main elenient or casting 9 of the draw-bar. The followerplates 5 are located upon the inside of such strap, as shown in Fig. 3,and a coil spring 10 is located between the opposing faces of thesefollower plates and tend to push the latter apart and cause their outerfaces to 'respectively engage the outermost and rearmost ab um'ents 3and 4, as shown in Fig. 1.

Thelfcfiiaw-bar casting 9 is formed with a horizontal slot ll'into whichprojects the ends` of two horizontally extending levers'4 12, 12,' theseends being superimposed, as shown in Fig. 4. The ends of this slot areprovided with friction or wearing 4plates 13, 13, which receive thedirect Contact of these lever ends, as shown in F ig. 1. levers arepivoted at 14 to castings 1.5 which are secured to the inner opposingfaces 0f the sills 1` and extend through slots 16 formed in the latter.The outer ends of these levers are pivotally connected With one endoflinks 17, 17, the other ends of which are pivotally connected withhorizontally extending levers 18, 18, pivoted at 19 to the. ,lateralextensions of the frame 6. The other ends of these levers 18 arepivotally connected with the front end of a piston rod 20, as shown inFig. 'lhis piston rod connected with a piston 21v which operates in acylinder 22 which is secured t0 the sills l, as shown in I`ig. 3. Thiscylinder may be filled with. any suitable fluid, air being, however,preferably used.

The pivotal axes ofthe levers 12 and 18l are'so arranged: that a givenmovement of the draw-bar will 'effect a movement of greater amplitudeonl the part of the piston rod and piston. he device illustrated, thisarrangement is such that "a, given movement of the draw-bar willfresultin four times such movement on the part of the pis? The' piston ispreferthrough which 'the fluid may pass from one side to theotherthereof.

small opening. ',23-

C that a pushing force-is applied to the draw- The above describeddevice operates as follows z-Assuming now that neither a'pulling orpushing force is being applied to the draw-bar, if the parts d notoccupy their normal positions, as illustrated in Fig. 1, the spring willexert force against one on the other of the follower plates and'move thedraw-bar and connected parts into such normal position. In this positionthe two follower plates abut those members of the pair of abutmentswhich. arel farthest removed. The location of the' cylinder .22 is suchthat in this normal position of parts, the piston occupies/a centralposition in such cylinder, as shwn in Fig. '3. Let it be assumed now bar.as is the casewhen another car is backed into the car carrying theabove-described detachedpiston 21. ofthe vcylinder-'is vice, for thepurposeof coupling them together. When this force is 'so applied, the

:draw-bar is pushed inwardly, which movetheactuation of the 12, 12, andthrough thus compressed and acts Aas a buffer absorbing the initialshock. During such movement of the draw-bar, the outermost Ifollowerplate 5 is. carried rear-- wardly, imparts its movemeifitto the spring10 which in Aturn imparts its movement to `the Yinnermostl follower"plate 5. --A .con-

tinuedapplication v vof this V,force #causes thel outermost followervplate to lengage the infnermost abutment 1 and thus impart themovement-to the draft lates 2, ltheV 'sills 1, and thus to the `caritsel this engagement between the follower `plate and draftv platesoccurs,"ihowever, the shock of the first impactlwill'be ,Y `taken up bythe fluid inthe cylinder; yAir-"Tasa fluidl for absorbing' thisinitialshoek is.' thus rendered Aespecially efficient by reason of.

the employment of the-previously described structure by -meansof1which`the movement `of the draw-bar eiectsagreatly increased amount ofmovementyonthepart of the piston, .as will be readily understood by'those skilled fin the art. position ofthe parts-as last Ilio'wn' in Fig.5, the piston lin this casel occupying its extreme innermost position,"yAssuming -now that the pushing ,force is removed. andthedraw-bar thusre-.

lievcd, the. spring, ting the innermost'of thetwo .follower plates I`it's'innermost. end abutvwhlch in turn abi'itsfthe innermost of thefahfiitmentsj, willleiiert a forge outwardly;V

. against the voutermostfollovver plate, which force will tend toyiiiovespring Wlllbe Y, Y uif'gnailoperating-Jagainst. the innermost .providedto assure the previously- L ridescrib'ed intermediate connections, thevactu- 25".:Jv ltion inwardly of the piston rod` 20 and at- The fluidinthe inner end A struction which would the' innermost fol-' lower4 plate'being'pushedlby the spring against; the v innermost. abutment `3.Before y sorber; a system of l and means tending systems each the partsback vinto This action of theby the compressed side of the piston and in4fact this air pressure will itself be sufiicient in some cases toeffect this movement where the piston and cylinder are absolutelyair-tight as well as theengaging surfaces of the piston-head and.;piston-rod. The spring, however, is the assumption of the parts of theirnormal position, should the piston not be absolutely lair-tight, and incase a continued'force applied to the drawban were to hold such pistonin its innermost position, the air would leak from the high pressureside to the low pressure side and a state .of equilibrium be producedwhich would prevent the return of the parts to their normal positionwithout the aid of the spring,

A pulling. force applied-to the draw-bar will effect the Same operationabove described with the exception that the parts in which the pistonoccupies the outermost end of the cylinder, and motion is applied tothecar through the engagement of the innermost follower plate with theoutermost abutments 3, as shown. 'Y

Instead `of resorting to the nicetiesof conrender the piston andcylinder absolutely air-tight, I prefer to pro-.

vide a definite leakage betweenthe opposite sides of the cylinderthrough `the piston,

ployed, the operation of the fspring 10 is facilitated, as will beunderstood.

and for .this purpose the aperture or-opening -23` is provided. Whensuch aperture is leinwhichl the usual car constructionis lnot -al- Yvtered and in which'the usual type of draw"- bar and draft-plates mayHavingv fully be employed. described my invention,

what I'claim'and desire `to secure by Let-l ters Patentis 1. Inadraft-rigging, a draw bar; a fluid controlled shock ablevers extendinglaterally on each side of necting the 'latter with said shock-absorber;to maintain the partsof said shock-absorber and draw-bar A,in a noi'-mal position.

the combination of said draw-bai' and con- .I

2. In a draftrigging,ithe combination of .I

.-a draw-bar; a fluid-controlled shock-ab'- soi-ber; two duplicatesystems of levers ex-v 1 tending respectively from opposite sides of andconnected with said draw-bar, said lever sorber; a system ofv leversvextendinglater- ;ally lof said draw-bar and connecting the .latter withsaid shock-absorber; and means 18 connecting said shock-absorber withsaid draw-bar; and means tendmgtoA

